Lantern.



PATENTED JUNE 2, 1 903.

' J. T. CASEY.

LANTERN.

APPLIOATIOII FILED one. s, 1902.

no MODEL.

NORRIS PETERS co uo-mums, mam" Patented June 2, 1903.

PATIENT FFICE.

JOHN T. CASEY, OF PHILADELPHIA, PENNSYLVANIA,

ASSIGNOR TO KEY- STONE LANTERN COMPANY, A COPORATION OF NEW JERSEY.

LANTERN.

SPECIFICATION forming part of Letters Patent No. 729,844, dated June 2,1903.

Application filed December 8,1902. Serial No. 133,720t. (No model.)

To (I/ZZ whom it m/aty concern.-

Be it known that I, JOHN T. CASEY, a citizen of the United States,residing at Philadelphia, in the county of Philadelphia and State ofPennsylvania, have invented certain new and useful Improvements inLanterns, of which the following is. a specification, reference beinghad to the accompanying drawings, forming part thereof.

This improvement relates to lanterns prim arily of the type known to thetrade as railroad-lanterns, the principal object of my mg vention beingto construct the bottom or base,

so that the incoming air necessary to support combustion shall beinduced to follow a circuitous course before entering the lantern,

the effect of such action being to break or modify the force of thedraft or of wind entering the air-supply openings before reaching theburner.

A further object is to provide means for securely holding the rotatableoil reservoir in position after it has been turned to adjust the wick.

Other objects of my invention are hereiir 7 after pointed out.

Referring to the drawings, Figure 1 represents a vertical centralsection of a lantern having my improvements applied thereto; Fig. 2, ahorizontal section on the line 2 2 of Fig. 1, and Fig. 3 a correspondingview of a modification.

Similar letters and numerals of reference indicate similar parts in theseveral figures.

Attached to the center of a lantern-base A is an upright cylindricalcasing B, within which an oil-reservoir (1,. carrying a burner D, isadapted to rotate. Fixed to the base A and surrounding the casing B whenassernbled is a collar E, which fits over the lower end of thecylindrical bottom portion F of the lantern and by means of fasteningdevices on said ring connects the base A to the lanternbody.

The cylindrical bottom portion I or cylinder, as it will be hereinaftercalled, is of greater diameter at the bottom, where it enters the collarE, than at its upper end, which supports the globe G, a shoulder f beingformed at the junction of the two diameters. Seated on the shoulder fisa fiat guardsupporting ring I-I, having an upturned flange h onitsinner edge. On the cylinderF, above the flange h, is formed a bead f,which, in connection with the shoulder f, holds the ring H in positionupon the cylinder. The globeguards I are attached'at their lower ends tothe ring H. Openings f for the admission of air are made in the cylinderF below the shoulder f.

A cylindrical wind-shield K, with flaring upper and lower ends 7t 7c, isplaced within thecylinder F,-between it and the casing 13. The lowerflared end 7.: of the wind-shield K, provided with a series of openings75, through which air passes to the burner, rests upon the beaded lowerend of the cylinder F and is soldered or otherwise attached thereto,while the upper flare It extends into a groove formed byheading thecylinder, as at f. Under the construction provided an annular air-spaceor quieting-chamber 2 is formed beweenthe cylinder F and the wind-shieldK, a second annular space or air-passage 3 extending betweenthewind-shield K and the casin g "B.

Air to support combustion passes through the openings f in the cylinderF and into the quieting-chamber 2, thence turning downwardly through theperforations 76* in the lower end of the wind-shield K, and finallypassing up through the annular space 3 to the burner. In traveling thiscircuitous course the force of the incoming air is broken and a directdraft prevented from reaching the burner, the result being theproduction of a steady and not readily extinguishable flame.

The casing B, within which the oil-cup rotates, is secured to the base Aby reason of a slight reduction of its diameter (effected by drawing) atits bottom, enabling it to pass through a central opening in the base.The reduced portion of the casing is then spun or bent around the edgeof theopenin'g and over a ring I), of stiff metal, soldered to the baseA, thus forming a comparatively broad and smooth bearing 1) for theoil-reservoir O. 'A cap-piece L, soldered to the upper end of the casingB, is furnished with a central aperture d for the passage through it ofthe burner D. A circular rack d on the cap L surrounds the aperture dand engages with and turnsa pinion cl on the wick-feeding shaft, bymeans of which arrangement the wick is raised or lowered as theoil-reservoir C is rotated in one or the other direction.

The oil-reservoir is contained partly within the casing B and partlybelow it in the base A, the latter being of lesser diameter and made tobe grasped by the hand when the reservoir is to be turned. A shoulder con the oil-cup at the point where it emerges from the casing 13 issupported by the bearing Z), formed, as described, by the lower end-ofthe casing B.

To prevent the oil'reservoir fromturning too easily, and thus changingthe power or character of the light, a'spring M, (see Figs. 2 and 3,)riveted to the outside of the casing B, extends through .a hole 12 insaid casing and bears with greater or lesser friction upon the outersurface of the oil-reservoir 0, thus effectually holding it againstaccidental rotation. A modified form of spring is shown in Fig. 3.

Throughout this specification I have described the casing B as fixed andthe oil-reservoir as movable; but the casing may be made movable and thereservoir fixed.

I do not restrict myself to the exact details of construction,combination, and arrangement herein set forth, it being obvious thatminor variations thereof not involving the exercise of invention may bemade by the skilled mechanic, and such departures from what is hereindescribed and claimed notinvolving invention I consider as within thescope and terms of my claims.

Having thus described my invention, I claim- 1. In a lantern, thecombination with a cylinder or cylindrical bottom portion havin g atrinlets, of a base removably attached thereto, a casing inclosing anoil-reservoir and attached to the base, and an annular windshieldbetween the cylinder and the casing and provided with air-openings, theconstruction being such that a quietiug-chamber is formed between thecylinder and the windshield and a passage also formed between thewind-shield and the casing through which air may reach the burner,substantially as set forth.

2. In a lantern, the combination with a cylinder or cylindrical bottomportion provided with an internal groove near its upper end and a seriesof openings below said groove, of a wind-shield flared at its upper andlower ends, the upper flare entering said groove and the lower flare,attached to the bottom of the cylinder, being provided withperforations, a quieting-chamber being formed between the cylinder andthe wind-shield, substantially as set forth.

3. In a lantern, the combination with a cylinder or cylindrical bottomportion provided with an internal groove near its upper end and a seriesof openings below said groove, of a wind-shield flared at its upper andlower ends, the upper flare entering said groove and the lower flare,attached to the bottom of the cylinder, being provided withperforations, a casing for an oil-reservoir, a quieting-chamber being.thus formed between the cylinder and the wind-shield and an annularair-passage being formed between said windshield and easing,substantially as set forth.

4:. In a lantern having a base, the combination of a casing securedthereto, a rotatable oil-reservoir contained within said casing, meansattached to one of said elements to bear with yielding frictionalcontact upon the other element, and means for rotating said reservoir inorder to adjust the wick, substantially as set forth.

5. In a lantern having a base, the combination of a casing securedthereto, an oil-reservoir adapted to rotate within said casing, meansfor rotating said reservoir in order to adjust the wick, and a springsecured to the casing arranged to bear with frictional contact upon thesurface of the oil-reservoir, substantially as set forth.

In testimony whereof I hereunto set my hand and seal.

JOHN T. CASEY. [L.

Witnesses:

CHAS. B. COLLIER, CHAS. C. COLLIER. Q

